mansel



P. MANSEL TIME STAMP Dec.' 1s, 15523.

Dec. 18 1923.

P. MANSEL.

TIME STAMP Filed Jan. -ll, 1922 2 Sheets-Sheet 2 Patented Dec. 18, 1923.

UNITED STATES' PATENT OFFICE.

PAUL MANSEL, OF BERLIN-CHARLOTTENBURG, GERMANY, ASSIGNOR TO SIEMENS Q HALSKE, AKTIENGESELLSCHAFT, 0F SIEMENSSTADT, NEAR BERLIN, GERMANY, A

CORPORATION OF GERMANY.

TIME STAMP.

Application led January 11, 1922.

To all rwhom t may concern:

Be it known that I, PAUL MANSEL, a citizen of the German Empire, residing at Berlin-Charlottenburg, Germany, have invented certain new and useful Improvements in Time Stamps, of which the following is a specification.

This invention relates to time-stamps, the time printing wheels of which are mounted in a reciprocating stamping frame, which carries also electromagnets, receiving at regular time intervals current impulses controlled by an electric clock and actuating the time printing wheels.

The object of the invention consists in the design of such a time-stamp, which is simple in construction and which may be manipulated as the usual hand time-stamp with manual control of the time printing wheels.

A principal feature of the invention consists in the arrangement of an ink pad in the lower part of the base frame in such a manner that at the downward motion of the stamping frame, the pad is engaged by the type wheels and moved also downwardly for a certain length of way and then rotated around an axis provided at the base frame, so that the time printing wheels can freely perform their downward stroke for stamping purposes. By this arrangement, ink rollers suoli as are usual in apparatus of this kind are avoided and a better inking of the types is obtained.

Another feature of invention consists in the arrangement and operation of the locking pawls for preventing undue rotation of the time printing wheels. At present in apparatus of this kind two sets of locking pawls are used, one of the sets being pressed by springs against the ratchet wheels pertaining to the time printing wheels and the other set being moved positively into and out of locking position. For doing away with one of the sets of pawls according to the invention the spring pressed pawls are secured in their locking position also by means of a crossbar connected positively with the armature of the electromagnets, so that it is moved with the latter into and out of locking position.

A further feature of invention consists in the attachment of the electromagnets to the detachable upper crossbar of the reciprocating frame, this crossbar forming the yoke of the electromagnet and carrying also the handle for manipulating the time- Serial No. 528 ,569.

stamp. The electric appliances of the 'I cally arranged electromagnets ris not greater f than that required by the counting and time printing wheels, so that a compact design of the stamp is obtained.

A time-stamp designed in accordance with the present invention is shown in Figs. 1 and 2 of the accompanying drawing, which figures represent two longitudinal sections of the stamp. Figs. 3 and 4 represent full views of the two broad sides of the lower portion of the stamp.

Shape and size of the new stamp are similar to those of the usual manually adjusted stamps. It has a reciprocating stamping frame 1, arranged within an outer base frame 2. The upper crossbar of the reciprocating frame is provided with an handle 3. In the handle is mounted a spring t, for cushioning the downward stroke and for automatically drawing back the reciprocating frame. The spring 4 rests with its lower end on a rod 5 connected to crossbar 6, which is fixed to the base frame and arranged within longitudinal slots 6 of the reciprocating frame. In the base frame is mounted an ink pad 7, which is rotatably arranged on an axis 8. This latter is supported by the free ends of arms 10 pivoted to the base frame. Springs 9 are connected at one end with these arms, and fixed at their other end to the base frame. The pad box carries at its bottom face'two pivoted arms 11, connected with each other by a spring 11 and resting on pawls 12, pivoted to the base frame 2 and connected by a spring 13 with cach. other.

In the reciprocating stamping frame are mounted electromagnets 14, connected by conduits 14 led through a channel 14 in the handle 3 to an electric controlling clock not shown in the drawing. The electromagnets 14.- are -ixed to the detachable upper crossbar 15 of the reciprocating frame. The crossbar forms the yoke of the electromagnets. The armature 16 of the electromagnet is connected by coupling rods 17 with an oscillating frame 19 loosely supported by lthe axis 18 of the type wheels. The ratchet wheels 18 pertaining tothe (g ramera printing wheels 18. are engaged and rotated in a well'lnown manner by progressing pawls 19 mounted in the trame 19, which @llibre es the time printing Wheels- Details ,A eientaieshown, for in in the U.' S. 'Patent No. 916,001.

In order to prevent an undue rotation oit the time printing wheels, while they are in contact with the pad, they are locled by locking pawls 2O pressed by springs 21 against the ratchet wheels. However to pos itively secure the time pointingl wheels against rotation, positively actuated locking means are further necessary. To that purpose, a crossbar 2 2 is provided according to the invention, which is fixed to the coupling rods 17. In the position or rest shown on the drawing this crossbar rests upon the locking pawls 20 and prevents any movement of the same. When the armature however is attracted on the 'excitation of the electromagnet by a current `impulse :tor irogressing thetime 'printing wheels, the crossbar 22 is withdrawn :trom the locking pawls 2O so that this latter may ,yield to `the pressure exercised by the" advancing pawls 19 on the ratchet wheels 18.

The advancing ot the trains or .wheels 23 of the counter is performed in the following` well `known manner.

A stop 24 provided at the base .iframe 2 and .projecting through a slot of the reciprocating traine 1, engages an oscillating frame 19.?, carrying `the feeding pawls or the counter wheels.` in the position or rest a spring 25 connected to the reciprocating frame 1 and the oscillatingrrame 19 is ,thus stretched. By moving the vrecig'irocating frame 1 downwardlyh 'for stamping purposes, the. frame 19.ZL is withdrawn vfrom ,the stop '.24 and rot-ated by .the stress of the spring 25. When the reciprocating frame returns to its upper position, the stop .241 engages again the oscillating trame 19l and this latter is rotated in the opposite direction, whereby the feeding pawls rotate one of the numeral wheels of the counter in the same manner as the rotation of the time printing wheels is performed by the reeds ing pawls 19.

For stamping the reciprocating` traine is moved downwardly by means 'ci ythe handle 3. The printing wheels engagethe ink pad which is also moved. downwardly until .the locking pawls 12 allow the passage of the arms 11, whereupon the pad is rotated downwardly around the axis 8, so that the passage for the downward motion ofthe printing wheels becomes tree andthe stamping operation may be performed. After stamping the `reciprcoating frame returns automatw ically under the action of the spring L1- to its upper position and the pad returns by the stress of the springs 9A to its position of rest.

Fig. 3 shows one broad side View of the lower portion et the stamp indicating` the opening 21 provided inv the outer traine 2, over which openings the pawls 12 extend transversely, the pawls being drawn togetheruby means or a spring 13, by which they are held 4against abatnientpins 13a. @n the points 12b or these pawis rest the points 11b or arms 11. Fig. 3 illustrates the position ci the pad before the stamping takes place. Fig. lillustrates the other, opposite, broad side or the lower portion or the stamp, with the pad 7 in its position during the ystamping operation. rEhe points 11b can be clearly seen at the ends arms 1i, which arms are held together by tension spring 11a. The operation or the pad during the stamping is as follows:

The inner iframe ot the stamp is pushed into the outer trame, the type wheels press against the pad ant. thereby press the arm points 111 onto the pawl points 12a. Since this pressure is vertical, the pawls12 with tie points 12a yield outwardly to a point atv which the points 11b o'l arms 11 slide vpast the points of pawls At this instant spring 13 returns the paivls 12 into the position shown in Fig. 3 in which they abut against pins 13a. rlhe pad now enconnjt no more obstructions in its downward swing into a vertical position in which the type wheels become exposed to the surface to be printed. `This downward swing` is caused by the lower rim oi tie oescending reciprocating` frame 1 abutting against the pad casing` and swinging it clear ot the typev wheels against the tension ci' spring 8, which is fastened at one end to the pad casing and at the other end to axle 8. The return motion ci the pad is effected by means of torsion spring SL. On the return motion oic the pad, the points 11b ot arms 11 press against the'lcwer edges or' pawls 12, arms 11 are spread outwardly until they slide past the cuter points or' .pa-wl 12 under the tension oi spring` 11a by which they are returned into 4normal position as shown in F 3. 1n thisnormal position the 11 abut against stops 11c which are shown in Fig. a.

dhile the reciprocating iframe is moving` upwardly, the advancing of the counter taires' place as described. the excitation ofthe electroinagnets 1li-*by a current impulse, the armature 16 is attracted, whereby the locking bar 22 is withdrawn from the locking pawls 2O and the frame 19 .is rotated by the coupling rods 17 in the direction et the arrow shown in Fig. 2. While the armature returns te its position or rest, the frame 19 is rotated opposite to the direction shown `by the arrow, and during this rotation the "feeding pawls 19 actuate the time printing wheels in the known mam ner.

When the armature has reached its posii is tion of rest, the locking bar 22 again locks positively the pawls 20 in their locking position.

I claim 1. 1n a time-stamp the combination with a reciprocatin stamping frame and time printing whee s mounted in said frame, of a base frame, an ink pad mounted in said base frame so as to be engaged by said time printing wheels when said stamping frame is moved downwardly and,support ing means ior said ink pad allowing a short parallel downward motion of the pad together with said time printin wheels to obtain a good inking of the printing types and hereupon a downward rotation of the ink pad to bring it out of the ath of said downwardly moving stamping rame.

2. In a time-stamp the combination with a reciprocating stamping frame and time' printing wheels mounted in said frame, of a base frame, an ink pad mounted in said base frame so as to be engaged by said time printing wheels when said stamping frame is moved downwardly, an axis onwhich the box of said ink pad is rotatably mounted, lever arms pivoted to Said base frame and supporting said axis at their free ends, springs ixed to said base frame and connected to said pivoted lever arms to keep the same in their upper position, lever arms pivoted to the bottom face of said pad box, a spring connected with said lever arms to keep the same apart, spring pawls pivoted to said base frame and supporting the free ends of said lever arms, and being adapted to recede when a pressure is exercised upon the same by said lever arms.

3. In a time stamp the combination with a reciprocating stamping frame and time printing wheels mounted in said frame of vertically arranged electromagnets fixed to the detachable upper cross bar of said stamping frame, said cross bar forming the yoke of said electromagnets, an armature arranged below said electromagnets in said stamping frame, an oscillating frame embracing said time printing wheels, progressing pawls mounted in said oscillating frame and engaging ratchet wheels pertaining to said time printing wheels, coupling rods connecting said armature with said oscillating frame, a base frame, an ink pad mounted in said base frame so as to be engaged by said time printing wheels when moving downwardly, said pad bein moved downwardly and pushed aside to ring it out of the path of said downwardly moving time printing wheels.

4. In a time stamp the combination with a reciprocatin stamping frame, and time printing whee s mounted in said frame, of electromagnets ixed to the detachable upper cross bar of said reciprocating stamping frame, said cross bar forming the yoke of said electromagnets and carrying the handle of the apparatus, channels in said handle for conduits connecting said electromagnets to a current impulse controlling electric clock, an armature mounted in sai reciprocating stamping frame below said electromagnets, an oscillatin frame embracing said time printing w eels, ratchet wheels pertaining to said time printin wheels, progressing pawls mounted in said oscillating frame and engaging said ratchet wheels, coupling rods connecting said armature to said oscillating frame, spring pressed locking pawls pressed against said ratchet wheels, a cross bar connected to said armature, said cross bar engaging the locking pawls and being posltively moved by said armature ito and out of locking position, a base frame, an ink pan mounted in said base frame so as to be engaged by said time printing wheels when said reciprocating stamping frame is moved downwardly and supporting means for said ink pad allowing a short parallel downward motion of the pad together with said printing wheels and hereupon a downward rotation of the pad to bring it out of the path of said downward moving stamping frame.

In testimony whereof I aix m si ature.

PAUL LAlEL. 

